DM-2000 (serv.man7). DM2000 Service Manual-Trouble Code List User Setup - Sharp Copying Equipment Service Manual (repair manual). Page 8

F6

84

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

88

Content

FAX control PWB communication
trouble (Timeout)

Detail

Communication trouble between
MCU and FAX control PWB
(Timeout error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

F9

00

Content

F9-

∗∗

 Communication trouble

between MCU and FAX (MCU
detection)

Detail

Communication establishment
error, framing error, parity error,
protocol error

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

10

Content

Printer PWB trouble

Detail

Communication trouble between
MCU and printer PWB

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

F9

80

Content

Printer PWB communication
trouble (Protocol)

Detail

Communication trouble between
MCU and printer PWB (Protocol
error)

Cause

Bad connection of printer PWB
connector
Defective harness between printer
PWB and MCU PWB.
Motherboard connector pin
breakage
Printer PWB ROM error, data error

Check and
remedy

Check connector/harness of printer
PWB and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.

DM-2000

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